planar

1 of 2

adjective

pla·​nar ˈplā-nər 

-ˌnär

1

: of, relating to, or lying in a plane

2

: two-dimensional in quality

planarity

plā-ˈner-ə-tē 

-ˈna-rə-

noun

planarity

2 of 2

noun

pla·​nar·​i·​ty pləˈnarətē 

plural -es

: the quality or state of being planar

Examples of planar in a Sentence

Recent Examples on the Web

Adjective

Eos uses the same planar-coil architecture and is intended to demonstrate fusion performance relevant to a commercial power plant. — Atharva Gosavi, Interesting Engineering, 10 Sep. 2026

In particular, in the 18th century, the Swiss mathematician Leonhard Euler discovered that planar graphs have many useful properties — among them a guarantee that any such graph will contain at least one vertex with five or fewer neighbors. — Gregory Barber, Quanta Magazine, 10 Sep. 2026

While some of the color contrasts do articulate planar shifts, such as the candy-stripe lips (red for upper, pink for lower), many of the touches are arbitrary splotches that neither bolster a shape nor set another off. — Zachary Fine, New Yorker, 31 Aug. 2026

Priced at $899, these headphones boast a groundbreaking three-way hybrid driver architecture, integrating dynamic, planar-magnetic, and balanced armature drivers for exceptional audio fidelity. — Mark Sparrow, Forbes.com, 23 Aug. 2026

Word History

First Known Use

Adjective

1850, in the meaning defined at sense 1

Rhymes for planar

• gainer
• plainer
• planer
• saner
• stainer
• strainer
• trainer
• abstainer
• campaigner
• complainer
• container
• coplanar